to check whether use field exists or not . concode_field_sep String keyPattern concode_elem_sep KVFetchValue fetchValue concode_elem_sep String distance concode_elem_sep Integer yoffset concode_elem_sep Float multiplier concode_elem_sep Integer length concode_elem_sep Integer xoffset concode_elem_sep LocationType locationType concode_elem_sep String valuePattern concode_elem_sep Coordinates valueRectangleCoordinates concode_elem_sep Integer noOfWords concode_elem_sep Coordinates keyRectangleCoordinates concode_elem_sep Integer width concode_elem_sep boolean useExistingField concode_field_sep Integer getYoffset concode_elem_sep void setFetchValue concode_elem_sep void setKeyRectangleCoordinates concode_elem_sep Coordinates getKeyRectangleCoordinates concode_elem_sep Integer getNoOfWords concode_elem_sep Integer getWidth concode_elem_sep void setYoffset concode_elem_sep void setMultiplier concode_elem_sep void setValuePattern concode_elem_sep void setLocationType concode_elem_sep String getKeyPattern concode_elem_sep Float getMultiplier concode_elem_sep String getDistance concode_elem_sep void setKeyPattern concode_elem_sep Integer getXoffset concode_elem_sep void setUseExistingField concode_elem_sep void setXoffset concode_elem_sep void setNoOfWords concode_elem_sep void setWidth concode_elem_sep String getValuePattern concode_elem_sep void setLength concode_elem_sep void setDistance concode_elem_sep Integer getLength concode_elem_sep KVFetchValue getFetchValue concode_elem_sep LocationType getLocationType concode_elem_sep Coordinates getValueRectangleCoordinates concode_elem_sep void setValueRectangleCoordinates
boolean function ( ) { return useExistingField ; }