code: public static void setWKID(BytesWritable geomref, int wkid){
  		ByteBuffer bb = ByteBuffer.allocate(4);
  		bb.putInt(wkid);
  	    System.arraycopy(bb.array(), 0, geomref.getBytes(), 0, SIZE_WKID);
  	}
docs: Sets the WKID (in place) for the given hive geometry bytes
  
  @param geomref reference to hive geometry bytes
  @param wkid