====== getRangeXZ ======

----

  * Parameters and types: None
  * Return value and type:
     * code: numberSuccess (ErrorCode.OK) ErrorCode
    * startX: numberstarting X coordinate
    * startZ: numberstarting Z coordinate
    * endX: numberEnd X coordinate
     * endZ: numberend Z coordinate
  * The main function of this method is to get the chunk range and return the start and end positions of the chunk.
  * The specific use cases are as follows:
	 - - Get chunk range
	local result,startX,startZ,endX,endZ=World:getRangeXZ()
	Chat:sendSystemMsg("Block start horizontal coordinate:"..startX)
	Chat:sendSystemMsg("Block start vertical coordinate:"..startZ)
	Chat:sendSystemMsg("Block end horizontal coordinate:"..endX)
	Chat:sendSystemMsg("Block end vertical coordinate:"..endZ)