Get Entity type Code in CRM plugin code

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In CRM each entity has separate object/entity type code. You can also get entity/object type code through plugin.          

Plugin Code:
 RetrieveEntityRequest request = new RetrieveEntityRequest();
 request.LogicalName = entity name;

// Retrieve the MetaData.
RetrieveEntityResponse response = (RetrieveEntityResponse)service.Execute(request);
int iEntityTypecode = response.EntityMetadata.ObjectTypeCode.Value;