question: checks if a string is not empty '' '' , not null and not whitespace only . concode_field_sep String EMPTY concode_field_sep String trim concode_elem_sep String toLowerCase concode_elem_sep boolean isEmpty concode_elem_sep String toUpperCase concode_elem_sep boolean isNotEmpty concode_elem_sep boolean isBlank
target: boolean function ( String arg0 ) { return ! StringUtils . isBlank ( arg0 ) ; }