PhabricatorPolicyInterface.php
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PhabricatorPolicyInterface.php
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			<?php

			interface PhabricatorPolicyInterface {

			public function getCapabilities();
			public function getPolicy($capability);
			public function hasAutomaticCapability($capability, PhabricatorUser $viewer);

			/**
			* Describe exceptions to an object's policy setting.
			*
			* The intent of this method is to explain and inform users about special
			* cases which override configured policy settings. If this object has any
			* such exceptions, explain them by returning one or more human-readable
			* strings which describe the exception in a broad, categorical way. For
			* example:
			*
			* - "The owner of an X can always view and edit it."
			* - "Members of a Y can always view it."
			*
			* You can return `null`, a single string, or a list of strings.
			*
			* The relevant capability to explain (like "view") is passed as a parameter.
			* You should tailor any messages to be relevant to that capability, although
			* they do not need to exclusively describe the capability, and in some cases
			* being more general ("The author can view and edit...") will be more clear.
			*
			* Messages should describe general rules, not specific objects, because the
			* main goal is to teach the user the rules. For example, write "the author",
			* not the specific author's name.
			*
			* @param const @{class:PhabricatorPolicyCapability} constant.
			* @return wild Description of policy exceptions. See above.
			*/
			public function describeAutomaticCapability($capability);

			}