2.14

• Added a few new methods for grabbing accounts that specific accounts have access to.

/**
* Retrieves a list of account IDs owned by the specified account ID.
*
* @Param pluginName the name of the plugin
* @Param accountID the unique identifier of the account
* @Return a list of account names owned by the specified account ID
*
* @SINCE 2.14
*/
List<String> accountsOwnedBy( @NotNull final String pluginName, @NotNull final UUID accountID)

/**
* Retrieves a list of account IDs that the specified account is a member of.
*
* @Param pluginName the name of the plugin
* @Param accountID the UUID of the account to check membership for
* @Return a List of String values representing the accounts that the account is a member of
*
* @SINCE 2.14
*/
List<String> accountsMemberOf( @NotNull final String pluginName, @NotNull final UUID accountID)

/**
* Retrieves a list of account IDs that the specified account has the specified permissions for.
*
* @Param pluginName the name of the plugin
* @Param accountID the UUID of the account to check access for
* @Param permissions variable number of permissions to check for
* @Return a list of accounts that the account has the specified permissions to
*
* @SINCE 2.14
*/
List<String> accountsAccessTo( @NotNull final String pluginName, @NotNull final UUID accountID, @NotNull final AccountPermission... permissions)

Added placeholders. Find the list here.