public void setPrincipalEntityType(String principalEntityType) {
        this.principalEntityType = principalEntityType;
    }
<p>
Specifies the namespace and data type of the principals generated for identities authenticated by the new
identity source.
</p>

@param principalEntityType
       Specifies the namespace and data type of the principals generated for identities authenticated by the new
       identity source.
aws-java-sdk-verifiedpermissions/src/main/java/com/amazonaws/services/verifiedpermissions/model/CreateIdentitySourceRequest.java