NPE when calling hashCode() on wildcard DynamoDB EnhancedType

[xiangqiyan]

Describe the bug

When a DynamoDB EnhancedType is created for a wildcard type or a generic type having wildcard type parameters. Calling the hashCode() method on the EnhancedType results in a NullPointerException

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

The hashCode is computed successfully

Current Behavior

java.lang.NullPointerException: Cannot invoke "Object.hashCode()" because "this.rawClass" is null

Reproduction Steps

EnhancedType<Set<?>> enhancedType = new EnhancedType<Set<?>>(){};
int hashCode = enhancedType.hashCode();

Possible Solution

Add a null check here

Additional Information/Context

No response

AWS Java SDK version used

2.26.20

JDK version used

openjdk version "17.0.12"

Operating System and version

macOS Sonoma 14.5

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