diff --git a/go/vendor/github.com/go-openapi/validate/spec_messages.go b/go/vendor/github.com/go-openapi/validate/spec_messages.go
new file mode 100644
index 0000000..441bb51
--- /dev/null
+++ b/go/vendor/github.com/go-openapi/validate/spec_messages.go
@@ -0,0 +1,354 @@
+// Copyright 2015 go-swagger maintainers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package validate
+
+import (
+	"net/http"
+
+	"github.com/go-openapi/errors"
+)
+
+// Error messages related to spec validation and returned as results.
+const (
+	// ArrayRequiresItemsError ...
+	ArrayRequiresItemsError = "%s for %q is a collection without an element type (array requires items definition)"
+
+	// ArrayInParamRequiresItemsError ...
+	ArrayInParamRequiresItemsError = "param %q for %q is a collection without an element type (array requires item definition)"
+
+	// ArrayInHeaderRequiresItemsError ...
+	ArrayInHeaderRequiresItemsError = "header %q for %q is a collection without an element type (array requires items definition)"
+
+	// BothFormDataAndBodyError indicates that an operation specifies both a body and a formData parameter, which is forbidden
+	BothFormDataAndBodyError = "operation %q has both formData and body parameters. Only one such In: type may be used for a given operation"
+
+	// CannotResolveRefError when a $ref could not be resolved
+	CannotResolveReferenceError = "could not resolve reference in %s to $ref %s: %v"
+
+	// CircularAncestryDefinitionError ...
+	CircularAncestryDefinitionError = "definition %q has circular ancestry: %v"
+
+	// DefaultValueDoesNotValidateError results from an invalid default value provided
+	DefaultValueDoesNotValidateError = "default value for %s in %s does not validate its schema"
+
+	// DefaultValueItemsDoesNotValidateError results from an invalid default value provided for Items
+	DefaultValueItemsDoesNotValidateError = "default value for %s.items in %s does not validate its schema"
+
+	// DefaultValueHeaderDoesNotValidateError results from an invalid default value provided in header
+	DefaultValueHeaderDoesNotValidateError = "in operation %q, default value in header %s for %s does not validate its schema"
+
+	// DefaultValueHeaderItemsDoesNotValidateError results from an invalid default value provided in header.items
+	DefaultValueHeaderItemsDoesNotValidateError = "in operation %q, default value in header.items %s for %s does not validate its schema"
+
+	// DefaultValueInDoesNotValidateError ...
+	DefaultValueInDoesNotValidateError = "in operation %q, default value in %s does not validate its schema"
+
+	// DuplicateParamNameError ...
+	DuplicateParamNameError = "duplicate parameter name %q for %q in operation %q"
+
+	// DuplicatePropertiesError ...
+	DuplicatePropertiesError = "definition %q contains duplicate properties: %v"
+
+	// ExampleValueDoesNotValidateError results from an invalid example value provided
+	ExampleValueDoesNotValidateError = "example value for %s in %s does not validate its schema"
+
+	// ExampleValueItemsDoesNotValidateError results from an invalid example value provided for Items
+	ExampleValueItemsDoesNotValidateError = "example value for %s.items in %s does not validate its schema"
+
+	// ExampleValueHeaderDoesNotValidateError results from an invalid example value provided in header
+	ExampleValueHeaderDoesNotValidateError = "in operation %q, example value in header %s for %s does not validate its schema"
+
+	// ExampleValueHeaderItemsDoesNotValidateError results from an invalid example value provided in header.items
+	ExampleValueHeaderItemsDoesNotValidateError = "in operation %q, example value in header.items %s for %s does not validate its schema"
+
+	// ExampleValueInDoesNotValidateError ...
+	ExampleValueInDoesNotValidateError = "in operation %q, example value in %s does not validate its schema"
+
+	// EmptyPathParameterError means that a path parameter was found empty (e.g. "{}")
+	EmptyPathParameterError = "%q contains an empty path parameter"
+
+	// InvalidDocumentError states that spec validation only processes spec.Document objects
+	InvalidDocumentError = "spec validator can only validate spec.Document objects"
+
+	// InvalidItemsPatternError indicates an Items definition with invalid pattern
+	InvalidItemsPatternError = "%s for %q has invalid items pattern: %q"
+
+	// InvalidParameterDefinitionError indicates an error detected on a parameter definition
+	InvalidParameterDefinitionError = "invalid definition for parameter %s in %s in operation %q"
+
+	// InvalidParameterDefinitionAsSchemaError indicates an error detected on a parameter definition, which was mistaken with a schema definition.
+	// Most likely, this situation is encountered whenever a $ref has been added as a sibling of the parameter definition.
+	InvalidParameterDefinitionAsSchemaError = "invalid definition as Schema for parameter %s in %s in operation %q"
+
+	// InvalidPatternError ...
+	InvalidPatternError = "pattern %q is invalid in %s"
+
+	// InvalidPatternInError indicates an invalid pattern in a schema or items definition
+	InvalidPatternInError = "%s in %s has invalid pattern: %q"
+
+	// InvalidPatternInHeaderError indicates a header definition with an invalid pattern
+	InvalidPatternInHeaderError = "in operation %q, header %s for %s has invalid pattern %q: %v"
+
+	// InvalidPatternInParamError ...
+	InvalidPatternInParamError = "operation %q has invalid pattern in param %q: %q"
+
+	// InvalidReferenceError indicates that a $ref property could not be resolved
+	InvalidReferenceError = "invalid ref %q"
+
+	// InvalidResponseDefinitionAsSchemaError indicates an error detected on a response definition, which was mistaken with a schema definition.
+	// Most likely, this situation is encountered whenever a $ref has been added as a sibling of the response definition.
+	InvalidResponseDefinitionAsSchemaError = "invalid definition as Schema for response %s in %s"
+
+	// MultipleBodyParamError indicates that an operation specifies multiple parameter with in: body
+	MultipleBodyParamError = "operation %q has more than 1 body param: %v"
+
+	// NonUniqueOperationIDError indicates that the same operationId has been specified several times
+	NonUniqueOperationIDError = "%q is defined %d times"
+
+	// NoParameterInPathError indicates that a path was found without any parameter
+	NoParameterInPathError = "path param %q has no parameter definition"
+
+	// NoValidPathErrorOrWarning indicates that no single path could be validated. If Paths is empty, this message is only a warning.
+	NoValidPathErrorOrWarning = "spec has no valid path defined"
+
+	// NoValidResponseError indicates that no valid response description could be found for an operation
+	NoValidResponseError = "operation %q has no valid response"
+
+	// PathOverlapError ...
+	PathOverlapError = "path %s overlaps with %s"
+
+	// PathParamNotInPathError indicates that a parameter specified with in: path was not found in the path specification
+	PathParamNotInPathError = "path param %q is not present in path %q"
+
+	// PathParamNotUniqueError ...
+	PathParamNotUniqueError = "params in path %q must be unique: %q conflicts with %q"
+
+	// PathParamNotRequiredError ...
+	PathParamRequiredError = "in operation %q,path param %q must be declared as required"
+
+	// RefNotAllowedInHeaderError indicates a $ref was found in a header definition, which is not allowed by Swagger
+	RefNotAllowedInHeaderError = "IMPORTANT!in %q: $ref are not allowed in headers. In context for header %q%s"
+
+	// RequiredButNotDefinedError ...
+	RequiredButNotDefinedError = "%q is present in required but not defined as property in definition %q"
+
+	// SomeParametersBrokenError indicates that some parameters could not be resolved, which might result in partial checks to be carried on
+	SomeParametersBrokenError = "some parameters definitions are broken in %q.%s. Cannot carry on full checks on parameters for operation %s"
+
+	// UnresolvedReferencesError indicates that at least one $ref could not be resolved
+	UnresolvedReferencesError = "some references could not be resolved in spec. First found: %v"
+)
+
+// Warning messages related to spec validation and returned as results
+const (
+	// ExamplesWithoutSchemaWarning indicates that examples are provided for a response,but not schema to validate the example against
+	ExamplesWithoutSchemaWarning = "Examples provided without schema in operation %q, %s"
+
+	// ExamplesMimeNotSupportedWarning indicates that examples are provided with a mime type different than application/json, which
+	// the validator dos not support yetl
+	ExamplesMimeNotSupportedWarning = "No validation attempt for examples for media types other than application/json, in operation %q, %s"
+
+	// PathParamGarbledWarning ...
+	PathParamGarbledWarning = "in path %q, param %q contains {,} or white space. Albeit not stricly illegal, this is probably no what you want"
+
+	// PathStrippedParamGarbledWarning ...
+	PathStrippedParamGarbledWarning = "path stripped from path parameters %s contains {,} or white space. This is probably no what you want."
+
+	// ReadOnlyAndRequiredWarning ...
+	ReadOnlyAndRequiredWarning = "Required property %s in %q should not be marked as both required and readOnly"
+
+	// RefShouldNotHaveSiblingsWarning indicates that a $ref was found with a sibling definition. This results in the $ref taking over its siblings,
+	// which is most likely not wanted.
+	RefShouldNotHaveSiblingsWarning = "$ref property should have no sibling in %q.%s"
+
+	// RequiredHasDefaultWarning indicates that a required parameter property should not have a default
+	RequiredHasDefaultWarning = "%s in %s has a default value and is required as parameter"
+
+	// UnusedDefinitionWarning ...
+	UnusedDefinitionWarning = "definition %q is not used anywhere"
+
+	// UnusedParamWarning ...
+	UnusedParamWarning = "parameter %q is not used anywhere"
+
+	// UnusedResponseWarning ...
+	UnusedResponseWarning = "response %q is not used anywhere"
+)
+
+// Additional error codes
+const (
+	// InternalErrorCode reports an internal technical error
+	InternalErrorCode = http.StatusInternalServerError
+	// NotFoundErrorCode indicates that a resource (e.g. a $ref) could not be found
+	NotFoundErrorCode = http.StatusNotFound
+)
+
+func invalidDocumentMsg() errors.Error {
+	return errors.New(InternalErrorCode, InvalidDocumentError)
+}
+func invalidRefMsg(path string) errors.Error {
+	return errors.New(NotFoundErrorCode, InvalidReferenceError, path)
+}
+func unresolvedReferencesMsg(err error) errors.Error {
+	return errors.New(errors.CompositeErrorCode, UnresolvedReferencesError, err)
+}
+func noValidPathMsg() errors.Error {
+	return errors.New(errors.CompositeErrorCode, NoValidPathErrorOrWarning)
+}
+func emptyPathParameterMsg(path string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, EmptyPathParameterError, path)
+}
+func nonUniqueOperationIDMsg(path string, i int) errors.Error {
+	return errors.New(errors.CompositeErrorCode, NonUniqueOperationIDError, path, i)
+}
+func circularAncestryDefinitionMsg(path string, args interface{}) errors.Error {
+	return errors.New(errors.CompositeErrorCode, CircularAncestryDefinitionError, path, args)
+}
+func duplicatePropertiesMsg(path string, args interface{}) errors.Error {
+	return errors.New(errors.CompositeErrorCode, DuplicatePropertiesError, path, args)
+}
+func pathParamNotInPathMsg(path, param string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, PathParamNotInPathError, param, path)
+}
+func arrayRequiresItemsMsg(path, operation string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, ArrayRequiresItemsError, path, operation)
+}
+func arrayInParamRequiresItemsMsg(path, operation string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, ArrayInParamRequiresItemsError, path, operation)
+}
+func arrayInHeaderRequiresItemsMsg(path, operation string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, ArrayInHeaderRequiresItemsError, path, operation)
+}
+func invalidItemsPatternMsg(path, operation, pattern string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, InvalidItemsPatternError, path, operation, pattern)
+}
+func invalidPatternMsg(pattern, path string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, InvalidPatternError, pattern, path)
+}
+func requiredButNotDefinedMsg(path, definition string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, RequiredButNotDefinedError, path, definition)
+}
+func pathParamGarbledMsg(path, param string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, PathParamGarbledWarning, path, param)
+}
+func pathStrippedParamGarbledMsg(path string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, PathStrippedParamGarbledWarning, path)
+}
+func pathOverlapMsg(path, arg string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, PathOverlapError, path, arg)
+}
+func invalidPatternInParamMsg(operation, param, pattern string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, InvalidPatternInParamError, operation, param, pattern)
+}
+func pathParamRequiredMsg(operation, param string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, PathParamRequiredError, operation, param)
+}
+func bothFormDataAndBodyMsg(operation string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, BothFormDataAndBodyError, operation)
+}
+func multipleBodyParamMsg(operation string, args interface{}) errors.Error {
+	return errors.New(errors.CompositeErrorCode, MultipleBodyParamError, operation, args)
+}
+func pathParamNotUniqueMsg(path, param, arg string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, PathParamNotUniqueError, path, param, arg)
+}
+func duplicateParamNameMsg(path, param, operation string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, DuplicateParamNameError, param, path, operation)
+}
+func unusedParamMsg(arg string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, UnusedParamWarning, arg)
+}
+func unusedDefinitionMsg(arg string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, UnusedDefinitionWarning, arg)
+}
+func unusedResponseMsg(arg string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, UnusedResponseWarning, arg)
+}
+func readOnlyAndRequiredMsg(path, param string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, ReadOnlyAndRequiredWarning, param, path)
+}
+func noParameterInPathMsg(param string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, NoParameterInPathError, param)
+}
+func requiredHasDefaultMsg(param, path string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, RequiredHasDefaultWarning, param, path)
+}
+func defaultValueDoesNotValidateMsg(param, path string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, DefaultValueDoesNotValidateError, param, path)
+}
+func defaultValueItemsDoesNotValidateMsg(param, path string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, DefaultValueItemsDoesNotValidateError, param, path)
+}
+func noValidResponseMsg(operation string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, NoValidResponseError, operation)
+}
+func defaultValueHeaderDoesNotValidateMsg(operation, header, path string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, DefaultValueHeaderDoesNotValidateError, operation, header, path)
+}
+func defaultValueHeaderItemsDoesNotValidateMsg(operation, header, path string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, DefaultValueHeaderItemsDoesNotValidateError, operation, header, path)
+}
+func invalidPatternInHeaderMsg(operation, header, path, pattern string, args interface{}) errors.Error {
+	return errors.New(errors.CompositeErrorCode, InvalidPatternInHeaderError, operation, header, path, pattern, args)
+}
+func invalidPatternInMsg(path, in, pattern string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, InvalidPatternInError, path, in, pattern)
+}
+func defaultValueInDoesNotValidateMsg(operation, path string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, DefaultValueInDoesNotValidateError, operation, path)
+}
+func exampleValueDoesNotValidateMsg(param, path string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, ExampleValueDoesNotValidateError, param, path)
+}
+func exampleValueItemsDoesNotValidateMsg(param, path string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, ExampleValueItemsDoesNotValidateError, param, path)
+}
+func exampleValueHeaderDoesNotValidateMsg(operation, header, path string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, ExampleValueHeaderDoesNotValidateError, operation, header, path)
+}
+func exampleValueHeaderItemsDoesNotValidateMsg(operation, header, path string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, ExampleValueHeaderItemsDoesNotValidateError, operation, header, path)
+}
+func exampleValueInDoesNotValidateMsg(operation, path string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, ExampleValueInDoesNotValidateError, operation, path)
+}
+func examplesWithoutSchemaMsg(operation, response string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, ExamplesWithoutSchemaWarning, operation, response)
+}
+func examplesMimeNotSupportedMsg(operation, response string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, ExamplesMimeNotSupportedWarning, operation, response)
+}
+func refNotAllowedInHeaderMsg(path, header, ref string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, RefNotAllowedInHeaderError, path, header, ref)
+}
+func cannotResolveRefMsg(path, ref string, err error) errors.Error {
+	return errors.New(errors.CompositeErrorCode, CannotResolveReferenceError, path, ref, err)
+}
+func invalidParameterDefinitionMsg(path, method, operationID string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, InvalidParameterDefinitionError, path, method, operationID)
+}
+func invalidParameterDefinitionAsSchemaMsg(path, method, operationID string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, InvalidParameterDefinitionAsSchemaError, path, method, operationID)
+}
+
+// disabled
+//func invalidResponseDefinitionAsSchemaMsg(path, method string) errors.Error {
+//	return errors.New(errors.CompositeErrorCode, InvalidResponseDefinitionAsSchemaError, path, method)
+//}
+func someParametersBrokenMsg(path, method, operationID string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, SomeParametersBrokenError, path, method, operationID)
+}
+func refShouldNotHaveSiblingsMsg(path, operationID string) errors.Error {
+	return errors.New(errors.CompositeErrorCode, RefShouldNotHaveSiblingsWarning, operationID, path)
+}