'Constructor for RequestMockBuilder
The constructed object should be a callable object
that can replace the class HttpResponse.
responses - A dictionary that maps methodIds into tuples
of (httplib2.Response, content). The methodId
comes from the \'rpcName\' field in the discovery
document.
check_unexpected - A boolean setting whether or not UnexpectedMethodError
should be raised on unsupplied method.'

def __init__(self, responses, check_unexpected=False):

    self.responses = responses
    self.check_unexpected = check_unexpected
