@SafeVarargs
			public final Bops<T> add(
				final int precedence,
				final T... operators
			) {
				return add(precedence, Set.of(operators)::contains);
			}
Add a new operator tokens with its precedence.

@param precedence the precedence of the operators
@param operators the operators
@return {@code this} builder, for method chaining
jenetics.ext/src/main/java/io/jenetics/ext/internal/util/FormulaParser.java