public CreateDataSetRequest clearPhysicalTableMapEntries() {
        this.physicalTableMap = null;
        return this;
    }
Removes all the entries added into PhysicalTableMap.

@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-quicksight/src/main/java/com/amazonaws/services/quicksight/model/CreateDataSetRequest.java