public String getContextName() {
		CodeBlockForOuterMostAlt alt = getOuterMostAltCodeBlock();
		if ( alt!=null && alt.altLabel!=null ) return alt.altLabel;
		return enclosingRuleRunction.name;
	}
Return label alt or return name of rule
tool/src/org/antlr/v4/codegen/model/SrcOp.java