public boolean hasExplicitMutability() {
        return hasExplicitMutability;
    }
Returns true if the property's mutability was configured explicitly
by the use of a trait instead of derived through its lifecycle
bindings within a resource.

<p> Also returns true for identifiers, since their mutability is inherent

@return Returns true if the mutability is explicitly defined by a trait or
if property is an identifier

@see CfnMutabilityTrait
smithy-aws-cloudformation-traits/src/main/java/software/amazon/smithy/aws/cloudformation/traits/CfnResourceProperty.java