public void setPassthroughBehavior(String passthroughBehavior) {
        this.passthroughBehavior = passthroughBehavior;
    }
<p>
Specifies the pass-through behavior for incoming requests based on the Content-Type header in the request, and
the available mapping templates specified as the requestTemplates property on the Integration resource. There are
three valid values: WHEN_NO_MATCH, WHEN_NO_TEMPLATES, and NEVER. Supported only for WebSocket APIs.
</p>
<p>
WHEN_NO_MATCH passes the request body for unmapped content types through to the integration backend without
transformation.
</p>
<p>
NEVER rejects unmapped content types with an HTTP 415 Unsupported Media Type response.
</p>
<p>
WHEN_NO_TEMPLATES allows pass-through when the integration has no content types mapped to templates. However, if
there is at least one content type defined, unmapped content types will be rejected with the same HTTP 415
Unsupported Media Type response.
</p>

@param passthroughBehavior
       Specifies the pass-through behavior for incoming requests based on the Content-Type header in the request,
       and the available mapping templates specified as the requestTemplates property on the Integration
       resource. There are three valid values: WHEN_NO_MATCH, WHEN_NO_TEMPLATES, and NEVER. Supported only for
       WebSocket APIs.</p>
       <p>
       WHEN_NO_MATCH passes the request body for unmapped content types through to the integration backend
       without transformation.
       </p>
       <p>
       NEVER rejects unmapped content types with an HTTP 415 Unsupported Media Type response.
       </p>
       <p>
       WHEN_NO_TEMPLATES allows pass-through when the integration has no content types mapped to templates.
       However, if there is at least one content type defined, unmapped content types will be rejected with the
       same HTTP 415 Unsupported Media Type response.
@see PassthroughBehavior
aws-java-sdk-apigatewayv2/src/main/java/com/amazonaws/services/apigatewayv2/model/GetIntegrationResult.java