is this character part of a valid kdb name ? concode_field_sep int kdbPort concode_elem_sep KdbProcess kdbProcess concode_elem_sep Logger logger concode_elem_sep int corePort concode_elem_sep String sessionId concode_elem_sep String shellId concode_elem_sep KdbClient kdbClient concode_elem_sep BeakerObjectConverter objConv concode_field_sep void exit concode_elem_sep List<String> autocomplete concode_elem_sep void cancelExecution concode_elem_sep Object convert concode_elem_sep List<?> toList concode_elem_sep void evaluate concode_elem_sep int getPortFromCore
boolean function ( char arg0 ) { return ( ( arg0 >= 'A' ) && ( arg0 <= 'Z' ) ) || ( ( arg0 >= 'a' ) && ( arg0 <= 'z' ) ) || ( ( arg0 >= '0' ) && ( arg0 <= '9' ) ) || ( arg0 == '_' ) ; }