set the callbakparameter only if it is alphanumeric concode_field_sep String country concode_elem_sep String address concode_elem_sep boolean geocode concode_elem_sep String apikey concode_elem_sep Pattern callbackValidationPattern concode_elem_sep OutputFormat format concode_elem_sep boolean postal concode_elem_sep String callback concode_elem_sep boolean indent concode_elem_sep boolean standardize concode_elem_sep Logger logger concode_elem_sep boolean DEFAULT_INDENTATION concode_field_sep boolean isIndent concode_elem_sep void setCountry concode_elem_sep String getApikey concode_elem_sep boolean isGeocode concode_elem_sep void setAddress concode_elem_sep String getCountry concode_elem_sep boolean isPostal concode_elem_sep void setApikey concode_elem_sep void setStandardize concode_elem_sep String getCallback concode_elem_sep void setPostal concode_elem_sep void setFormat concode_elem_sep void setIndent concode_elem_sep void setGeocode concode_elem_sep OutputFormat getFormat concode_elem_sep String getAddress concode_elem_sep String toString concode_elem_sep boolean isStandardize
void function ( String arg0 ) { if ( arg0 != null && callbackValidationPattern . matcher ( arg0 ) . matches ( ) ) { this . callback = arg0 ; } else if ( arg0 == null ) { this . callback = null ; } else { logger . warn ( "srini_string" + arg0 + "srini_string" ) ; } }