Configuration Descriptor
A descriptor is the specification on how a configuration must be provided for a particular functionality. A simple form of a descriptor is a property bundle provided by Java.
In Canvas Technology, all descriptors are taken as property files. So, all the attributes that a descriptor needs are as keys within the property file.
Any place where the bundle name has to be provided, it must be without the ".properties" suffix.
For example: If your bundle name is SigmaImplementation.properties, then the value would be SigmaImplementation.
Refer the following: