def is_accessible(self, user, method, resource):
return True<EOL>
Determines the accessibility to a resource endpoint for a particular
method. An inaccessible resource is indistinguishable from a
non-existant resource.

@param[in] user
    The user in question that is being checked.

@param[in] method
    The method in question that is being performed (eg. 'GET').

@param[in] resource
    The resource instance that is being authorized.

@returns
    Returns true if the user can access the resource for
    the passed operation; otherwise, false.