At line 1369 we have the grammar definition of properties and we have:
<property_name>:
type: <property_type>
description: <property_description>
required: <property_required>
default: <default_value>
status: <status_value>
constraints:

• <property_constraints>

It should be more proper to write:
<property_name>:
type: <YAML Type>
description: <description definition>
required: <YAML_BOOLEAN>
default: <default_value>
status: <property_status_value>
etc....
We do not have ANY "property_type" but a "YAML type"