docs: protected AstNode parseSlashedStatement( DdlTokenStream tokens,
                                               String[] stmt_start_phrase,
                                               AstNode parentNode,
                                               String mixinType ) {
          assert tokens != null;
          assert stmt_start_phrase != null && stmt_start_phrase.length > 0;
          assert parentNode != null;
  
          markStartOfStatement(tokens);
          tokens.consume(stmt_start_phrase);
          AstNode result = nodeFactory().node(getStatementTypeName(stmt_start_phrase), parentNode, mixinType);
  
          parseUntilFwdSlash(tokens, false);
  
          consumeSlash(tokens);
  
          markEndOfStatement(tokens, result);
  
          return result;
      }