code: function(baseUrl, mxc, width, height,
                                 resizeMethod, allowDirectLinks) {
          if (typeof mxc !== "string" || !mxc) {
              return '';
          }
          if (mxc.indexOf("mxc://") !== 0) {
              if (allowDirectLinks) {
                  return mxc;
              } else {
                  return '';
              }
          }
          let serverAndMediaId = mxc.slice(6); // strips mxc://
          let prefix = "/_matrix/media/v1/download/";
          const params = {};
  
          if (width) {
              params.width = width;
          }
          if (height) {
              params.height = height;
          }
          if (resizeMethod) {
              params.method = resizeMethod;
          }
          if (utils.keys(params).length > 0) {
              // these are thumbnailing params so they probably want the
              // thumbnailing API...
              prefix = "/_matrix/media/v1/thumbnail/";
          }
  
          const fragmentOffset = serverAndMediaId.indexOf("#");
          let fragment = "";
          if (fragmentOffset >= 0) {
              fragment = serverAndMediaId.substr(fragmentOffset);
              serverAndMediaId = serverAndMediaId.substr(0, fragmentOffset);
          }
          return baseUrl + prefix + serverAndMediaId +
              (utils.keys(params).length === 0 ? "" :
              ("?" + utils.encodeParams(params))) + fragment;
      }
docs: Get the HTTP URL for an MXC URI.
  @param {string} baseUrl The base homeserver url which has a content repo.
  @param {string} mxc The mxc:// URI.
  @param {Number} width The desired width of the thumbnail.
  @param {Number} height The desired height of the thumbnail.
  @param {string} resizeMethod The thumbnail resize method to use, either
  "crop" or "scale".
  @param {Boolean} allowDirectLinks If true, return any non-mxc URLs
  directly. Fetching such URLs will leak information about the user to
  anyone they share a room with. If false, will return the emptry string
  for such URLs.
  @return {string} The complete URL to the content.