core/play/src/main/java/play/mvc/Results.java
public static Result preconditionRequired(JsonNode content, JsonEncoding encoding) {
    return status(PRECONDITION_REQUIRED, content, encoding);
  }
public static Result preconditionRequired(JsonNode content, JsonEncoding encoding) {
    return status(PRECONDITION_REQUIRED, content, encoding);
  }
public static Result preconditionRequired ( JsonNode content , JsonEncoding encoding ) { return status ( PRECONDITION_REQUIRED , content , encoding ) ; }
Generates a 428 Precondition Required result.

@param content the result's body content as a play-json object
@param encoding the encoding into which the json should be encoded
@return the result
Generates a 428 Precondition Required result .