UomLength returns UomLength:
INT ID
;

class MyDslProposalProvider extends AbstractMyDslProposalProvider {
	
	override complete_UomLength(EObject model, RuleCall ruleCall, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
		super.complete_UomLength(model, ruleCall, context, acceptor)
		if (context.prefix.isEmpty) {
			acceptor.accept(createCompletionProposal("1", context))
		} else if (context.prefix.endsWith(" ")) {
			acceptor.accept(createCompletionProposal(context.prefix+"mm", context))
		} else {
			acceptor.accept(createCompletionProposal(context.prefix+" mm", context))
		}  
	}
	
	@Inject MyDslGrammarAccess ga
	
	override complete_ID(EObject model, RuleCall ruleCall, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
		if (ruleCall === ga.uomLengthAccess.IDTerminalRuleCall_1) {
			acceptor.accept(createCompletionProposal("mm", context))
		}
		super.complete_ID(model, ruleCall, context, acceptor)
	}
	
}