<li data-type='method' style='display: none;'><a href="Metadata.html#security_info">security_info</a></li><li data-type='method' style='display: none;'><a href="Metadata.html#pages">pages</a></li></ul></li><li><a href="Content.html">Content</a><ul class='methods'><li data-type='method' style='display: none;'><a href="Content.html#number_of_images">number_of_images</a></li><li data-type='method' style='display: none;'><a href="Content.html#only_images">only_images</a></li><li data-type='method' style='displa