Greeting :
'module' name=ID '{'
innerElements += ModuleInnerElements*
'}'
;

ModuleInnerElements:
      EntitieStatement
      | InterceptorStatement
;

EntityStatement:
'entity' name=ID '{'
attributes += attributeStatement ((',' attributes += attributeStatement)?)*  
'}'
;

InterceptorStatement:
'interceptor' name=ID '{'
//Not interesting things
'}'

module {
 
entitie customer {
// Attributtes
} 

interceptor customer {
// Not interesting things
}

}

Greeting :
'module' name=ID '{'
Entities += EntityStatement*
Interceptors += InterceptorStatement*
'}'
;

EntityStatement:
'entity' name=ID '{'
attributes += attributeStatement ((',' attributes += attributeStatement)?)*  
'}'
;

InterceptorStatement:
'interceptor' name=ID '{'
//Not interesting things
'}'