Add sample spec to catch external file reference issues in swagger-parser (#17773)

* add a sample that catches swagger-parser issues with external refs

* generate samples for new test spec

samples/client/echo_api/go-external-refs/docs/DataQuery.md

@@ -0,0 +1,108 @@
+# DataQuery
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**Suffix** | Pointer to **string** | test suffix | [optional] 
+**Text** | Pointer to **string** | Some text containing white spaces | [optional] 
+**Date** | Pointer to **time.Time** | A date | [optional] 
+
+## Methods
+
+### NewDataQuery
+
+`func NewDataQuery() *DataQuery`
+
+NewDataQuery instantiates a new DataQuery object
+This constructor will assign default values to properties that have it defined,
+and makes sure properties required by API are set, but the set of arguments
+will change when the set of required properties is changed
+
+### NewDataQueryWithDefaults
+
+`func NewDataQueryWithDefaults() *DataQuery`
+
+NewDataQueryWithDefaults instantiates a new DataQuery object
+This constructor will only assign default values to properties that have it defined,
+but it doesn't guarantee that properties required by API are set
+
+### GetSuffix
+
+`func (o *DataQuery) GetSuffix() string`
+
+GetSuffix returns the Suffix field if non-nil, zero value otherwise.
+
+### GetSuffixOk
+
+`func (o *DataQuery) GetSuffixOk() (*string, bool)`
+
+GetSuffixOk returns a tuple with the Suffix field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetSuffix
+
+`func (o *DataQuery) SetSuffix(v string)`
+
+SetSuffix sets Suffix field to given value.
+
+### HasSuffix
+
+`func (o *DataQuery) HasSuffix() bool`
+
+HasSuffix returns a boolean if a field has been set.
+
+### GetText
+
+`func (o *DataQuery) GetText() string`
+
+GetText returns the Text field if non-nil, zero value otherwise.
+
+### GetTextOk
+
+`func (o *DataQuery) GetTextOk() (*string, bool)`
+
+GetTextOk returns a tuple with the Text field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetText
+
+`func (o *DataQuery) SetText(v string)`
+
+SetText sets Text field to given value.
+
+### HasText
+
+`func (o *DataQuery) HasText() bool`
+
+HasText returns a boolean if a field has been set.
+
+### GetDate
+
+`func (o *DataQuery) GetDate() time.Time`
+
+GetDate returns the Date field if non-nil, zero value otherwise.
+
+### GetDateOk
+
+`func (o *DataQuery) GetDateOk() (*time.Time, bool)`
+
+GetDateOk returns a tuple with the Date field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetDate
+
+`func (o *DataQuery) SetDate(v time.Time)`
+
+SetDate sets Date field to given value.
+
+### HasDate
+
+`func (o *DataQuery) HasDate() bool`
+
+HasDate returns a boolean if a field has been set.
+
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+