public boolean isEpsilon() {
		return false;
	}
Determines if the transition is an "epsilon" transition.

<p>The default implementation returns {@code false}.</p>

@return {@code true} if traversing this transition in the ATN does not
consume an input symbol; otherwise, {@code false} if traversing this
transition consumes (matches) an input symbol.
runtime/Java/src/org/antlr/v4/runtime/atn/Transition.java