public AceCommandDescription withReadOnly(boolean readOnly) {
        this.readOnly = readOnly;
        return this;
    }
Chainable setter method for readOnly property.

@param readOnly describes does this command change editor document or not
@return reference to this command description
stroom-core-client-widget/src/main/java/edu/ycp/cs/dh/acegwt/client/ace/AceCommandDescription.java