The MediaKeySystemAccess.getConfiguration() method returns an object with the supported combination of the following configuration options:
initDataTypesRead only-
Returns a list of supported initialization data type names. An initialization data type is a string indicating the format of the initialization data.
audioCapabilitiesRead only-
Returns a list of supported audio type and capability pairs.
videoCapabilitiesRead only-
Returns a list of supported video type and capability pairs.
distinctiveIdentifierRead only-
Indicates whether a persistent distinctive identifier is required.
persistentStateRead only-
Indicates whether the ability to persist state is required.