public void complete_Function(EObject model, RuleCall ruleCall, ContentAssistContext context, ICompletionProposalAcceptor acceptor

	@Override
	public void complete_DataStructure(EObject model, RuleCall ruleCall, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
		super.complete_DataStructure(model, ruleCall, context, acceptor);

		String prop = "sheet.getlist";
		StyledString displayString = new StyledString("sheet.getlist");
		String proposalText = getValueConverter().toString(prop, ruleCall.getRule().getName());
		ICompletionProposal proposal = createCompletionProposal(proposalText, displayString, null, context);
		if (proposal instanceof MyHLMConfigurableCompletionProposal) {
			MyHLMConfigurableCompletionProposal configurable = (MyHLMConfigurableCompletionProposal) proposal;
			
			Position[] positions = new Position[2];
			positions[0] = new Position(0,0);
			positions[1] = new Position(0,0);
			
			String[] values = new String[]{"this", "that", "which"};
			ICompletionProposal[][] choices = new ICompletionProposal[2][3];
			for (int i = 0; i < 2; i++) {
				for (int j = 0; j < 3; j++) {
					choices[i][j] = createCompletionProposal(values[j], context);
				}
			}
						
			int count = choices.length;
			int offset = configurable.getReplacementOffset();
			
			String[] params = new String[]{"sheet", "getlist"};
			for (int i = 0; i < count; i++) {
				ICompletionProposal p = choices[i][0];;
				Position position = positions[i];
				position.setOffset(offset);
				position.setLength(params[i].length());
				
				if (p instanceof MyHLMConfigurableCompletionProposal) {
					MyHLMConfigurableCompletionProposal t = (MyHLMConfigurableCompletionProposal) p;
					t.setReplacementOffset(offset);
					t.setReplacementLength(params[i].length());
				}
					
				offset += params[i].length() + 1;
			}
			
			configurable.setSimpleLinkedMode(context.getViewer(), positions, choices, ' ');
		}
		acceptor.accept(proposal);
	}

	@Override
	protected ConfigurableCompletionProposal doCreateProposal(String proposal, StyledString displayString, Image image, int priority, ContentAssistContext context) {
		int replacementOffset = context.getReplaceRegion().getOffset();
		int replacementLength = context.getReplaceRegion().getLength();
		MyHLMConfigurableCompletionProposal result = doCreateProposal(proposal, displayString, image, replacementOffset, replacementLength);
		result.setPriority(priority);
		result.setMatcher(context.getMatcher());
		result.setReplaceContextLength(context.getReplaceContextLength());
		return result;
	}
	
	@Override
	protected MyHLMConfigurableCompletionProposal doCreateProposal(String proposal, StyledString displayString, Image image, int replacementOffset, int replacementLength) {
		return new MyHLMConfigurableCompletionProposal(proposal, replacementOffset, replacementLength, proposal.length(), image, displayString, null, null);
	}