The AML tree is composite and has the following node types: - Root node. - Object node. - Data node. These nodes are part of the Fixed Arguments or the Variable arguments list in the AML tree. The AML tree interface provides functions to manage the fixed and the variable argument nodes in the AML tree. Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Signed-off-by: Sami Mujawar <sami.mujawar@arm.com> Reviewed-by: Alexei Fedorov <Alexei.Fedorov@arm.com>