.setHorizontalAlignment on a Textcolumn does not compile

Hello,

I get the following complier-error in elipse with google plugin with
the following code:
"The method
setHorizontalAlignment(HasHorizontalAlignment.HorizontalAlignmentConstant)
is undefined for the type TextColumn<String>"

Code:

TextColumn<String> tc = new TextColumn<String>()
{ @Override public String getValue(String object)
{return object;}
};
tc.setHorizontalAlignment( HasHorizontalAlignment.ALIGN_RIGHT);

I the APIDOC I find the method setHorizontalAlignment for
(Text)Column.

What am I doing wrong?

Thanks Frank

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