Bug 17667 Code assist close
F1 - create class public class A { public static void main(String[] arguments) { da } } - open code assist after da - press t observe: code assist closes although there are a lot of Data* classes
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/java/JavaCompletionProposal.java
fReplacementLength= replacementLength;
	}
	/**
	 * Gets the replacement string.
	 * @return Returns a String
	 */
	public String getReplacementString() {
		return fReplacementString;
	}
	/**
	 * Sets the replacement string.
	 * @param replacementString The replacement string to set
	 */
	public void setReplacementString(String replacementString) {
		fReplacementString= replacementString;
	}
	/**
	 * Sets the image.
	 * @param image The image to set
	 */
	public void setImage(Image image) {
		fImage= image;
	}
	/*
	 * @see ICompletionProposalExtension#isValidFor(IDocument, int)
	 */
	public boolean isValidFor(IDocument document, int offset) {
		
		if (offset < fReplacementOffset)
			return false;