code: @Pure
  	@Inline(value="(!$3.equal($1, $2))", imported=Objects.class)
  	public static boolean operator_notEquals(Object a, Object b) {
  		return !Objects.equal(a, b);
  	}
docs: The <code>equals not</code> operator. This is the equivalent to a negated, null-safe
  {@link Object#equals(Object)} method.
  
  @param a
  an object.
  @param b
  another object.
  @return <code>true</code> if {@code a} and {@code b} are not equal.