LexerActionExecutor.append

@uml Creates a {@link LexerActionExecutor} which executes the actions forthe input {@code lexerActionExecutor} followed by a specified {@code lexerAction}.

@param lexerActionExecutor The executor for actions already traversed by the lexer while matching a token within a particular {@link LexerATNConfig}. If this is {@code null}, the method behaves as though it were an empty executor. @param lexerAction The lexer action to execute after the actions specified in {@code lexerActionExecutor}.

@return A {@link LexerActionExecutor} for executing the combine actions of {@code lexerActionExecutor} and {@code lexerAction}.

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