function setup() {
						if (that._isDisplayDownloadButton()) {
							oOverflowToolbar.addContent(oButton);
						} else {
							oOverflowToolbar.removeContent(oButton);
						}
						oButton.setEnabled(that._bRenderPdfContent);
						oTitle.setText(that.getTitle());
					}
Setup the popup before opening
@param oPopup
@private