class Magick::RVG::Utility::GraphicContext

def text_anchor(anchor)
    anchor = anchor.intern
    anchor_enum = TEXT_ANCHOR.fetch(anchor, Magick::StartAnchor)
    @gc.text_anchor(anchor_enum)
    align = ANCHOR_TO_ALIGN.fetch(anchor, Magick::LeftAlign)
    @shadow[-1].align = align
    @text_attrs.text_anchor = anchor
    nil
end