@Deprecated
	public final void setPrecedenceDfa(boolean precedenceDfa) {
		if (precedenceDfa != isPrecedenceDfa()) {
			throw new UnsupportedOperationException("The precedenceDfa field cannot change after a DFA is constructed.");
		}
	}
Sets whether this is a precedence DFA.

@param precedenceDfa {@code true} if this is a precedence DFA; otherwise,
{@code false}

@throws UnsupportedOperationException if {@code precedenceDfa} does not
match the value of {@link #isPrecedenceDfa} for the current DFA.

@deprecated This method no longer performs any action.
runtime/Java/src/org/antlr/v4/runtime/dfa/DFA.java