Forces the receiver to generate glyphs for the specified glyph range, if it has not already done so.
Original signature is '- (void)ensureGlyphsForGlyphRange:(NSRange)glyphRange'
Available in Mac OS X v10.5 and later.


- glyphRange (NSRange)
- The glyph range for which glyphs are generated.

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)