docs: function get_pg_prop(name) {
  
  				if(name[0] === '$') {
  					return name.substr(1);
  				}
  
  				var parts = name.split('.');
  
  				if(parts.length === 1) {
  					return "content->>'" + name + "'";
  				}
  
  				if(parts.length === 2) {
  					return "content->'" + parts.join("'->>'") + "'";
  				}
  
  				return "content->'" + parts.slice(0, parts.length-1).join("'->'") + "'->>'" + parts[parts.length-1] + "'";
  			}