Executes a custom lexer action by calling Antlr4.Runtime.Recognizer{Symbol, ATNInterpreter}.Action(Antlr4.Runtime.RuleContext, int, int) with the rule and action indexes assigned to the custom action. The implementation of a custom action is added to the generated code for the lexer in an override of Antlr4.Runtime.Recognizer{Symbol, ATNInterpreter}.Action(Antlr4.Runtime.RuleContext, int, int) when the grammar is compiled.
This class may represent embedded actions created with the {...} syntax in ANTLR 4, as well as actions created for lexer commands where the command argument could not be evaluated when the grammar was compiled.