title: How to ignore missing glyphs in font used by PDFBox 2.0.7
body: <p>I'm seeing "java.lang.IllegalArgumentException: No glyph for U+05D0 in font" (as an example) exception being thrown when calling the showText(String) method of PDFPageContentStream.</p>
  
  <p>Catching the exception isn't very helpful because good characters won't get written. Neither is checking each character in the input string, which would be a performance killer (each PDF could be thousands of pages, millions of characters). What I really need is a way to prevent the exception for ANY missing glyph and have it automatically replaced with some other glyph, or a dynamically created glyph that shows the unicode value.</p>
  
  <p>I don't want to stop producing the PDF because a font doesn't support a particular glyph, I just want some replacement character to be used instead and keep going.</p>
  
  <p>How to achieve this?</p>