app.project.item(index).layer(index).propertySpec.isInterpolationTypeValid(type)
Description
Returns true if the named property can be interpolated using the specified keyframe interpolation type.
Parameters
typeAKeyframeInterpolationType enumerated value; one of:
KeyframeInterpolationType.LINEAR
KeyframeInterpolationType.BEZIER
KeyframeInterpolationType.HOLD
Returns
Boolean.