@conf
def is_defined(self, key):
	defines = self.env[DEFINES]
	if not defines:
		return False
	try:
		value = defines[key]
	except __HOLE__:
		return False
	else:
		return value != UNDEFINED
dataset/ETHPy150Open appcelerator-archive/poc-nodejs-desktop/Resources/nodejs/builds/linux/node/lib/node/wafadmin/Tools/config_c.py/is_defined