Exception being thrown when the method to set an embeded ID is implemented in the governor

The following Stack trace is output in the Shell when the setEmbeddedId method is implemented in the DataOnDemand java class.

Method 'setEmbeddedId' already defined in target type 'com.iquo.igneous.brokersystem.server.domain.working.client.ClientDataOnDemand' (ITD target 'com.iquo.igneous.brokersystem.server.domain.working.client.ClientDataOnDemand_Roo_DataOnDemand')
java.lang.IllegalArgumentException: Method 'setEmbeddedId' already defined in target type 'com.iquo.igneous.brokersystem.server.domain.working.client.ClientDataOnDemand' (ITD target 'com.iquo.igneous.brokersystem.server.domain.working.client.ClientDataOnDemand_Roo_DataOnDemand')
at org.springframework.roo.support.util.Assert.isNull(Assert.java:89)
at org.springframework.roo.classpath.details.ItdTypeDetailsBuilder.onAddMethod(ItdTypeDetailsBuilder.java:84)
at org.springframework.roo.classpath.details.AbstractMemberHoldingTypeDetailsBuilder.addMethod(AbstractMemberHoldingTypeDetailsBuilder.java:138)
at org.springframework.roo.classpath.details.AbstractMemberHoldingTypeDetailsBuilder.addMethod(AbstractMemberHoldingTypeDetailsBuilder.java:156)
at org.springframework.roo.addon.dod.DataOnDemandMetadata.<init>(DataOnDemandMetadata.java:136)