@uml Computes the set of input symbols which could follow the current parser state and context, as given by {@link #getState} and {@link #getContext}, espectively.
@see ATN#getExpectedTokens(int, RuleContext)
See Implementation
@uml Computes the set of input symbols which could follow the current parser state and context, as given by {@link #getState} and {@link #getContext}, espectively.
@see ATN#getExpectedTokens(int, RuleContext)