docs: public ImportDescr importStatement( PackageDescrBuilder pkg ) throws RecognitionException {
          ImportDescrBuilder imp = null;
          try {
              imp = helper.start( pkg,
                                  ImportDescrBuilder.class,
                                  null );
  
              // import
              match( input,
                     DRL5Lexer.ID,
                     DroolsSoftKeywords.IMPORT,
                     null,
                     DroolsEditorType.KEYWORD );
              if ( state.failed ) return null;
  
              String kwd;
              if ( helper.validateIdentifierKey( kwd = DroolsSoftKeywords.FUNCTION ) ||
                   helper.validateIdentifierKey( kwd = DroolsSoftKeywords.STATIC ) ) {
                  // function
                  match( input,
                         DRL5Lexer.ID,
                         kwd,
                         null,
                         DroolsEditorType.KEYWORD );
                  if ( state.failed ) return null;
              }
  
              // qualifiedIdentifier
              String target = qualifiedIdentifier();
              if ( state.failed ) return null;
  
              if ( input.LA( 1 ) == DRL5Lexer.DOT && input.LA( 2 ) == DRL5Lexer.STAR ) {
                  // .*
                  match( input,
                         DRL5Lexer.DOT,
                         null,
                         null,
                         DroolsEditorType.IDENTIFIER );
                  if ( state.failed ) return null;
                  match( input,
                         DRL5Lexer.STAR,
                         null,
                         null,
                         DroolsEditorType.IDENTIFIER );
                  if ( state.failed ) return null;
                  target += ".*";
              }
              if ( state.backtracking == 0 ) imp.target( target );
  
          } catch ( RecognitionException re ) {
              reportError( re );
          } finally {
              helper.end( ImportDescrBuilder.class,
                          imp );
          }
          return (imp != null) ? imp.getDescr() : null;
      }