class Test

	def main is shared
		i = 5
		assert i is 5  # .warning. value types
		assert i is not 6  # .warning. value types

	def identityOperatorWarnings
		a = 'foo'
		b = 'bar'
		if a is 'foo', .noOp  # .warning. Do not use the identity operator
		if a is not 'foo', .noOp  # .warning. Do not use the identity operator
		if a is 'foo' is b, .noOp  # .warning. Do not use the identity operator

	def noOp
		pass