public String getPassthroughBehavior() {
        return this.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>

@return 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