title: How can I expose all available liquid methods for a model?
body: <p>Several of my models have liquid methods defined, using:</p>
  
  <pre><code>class MyModel &lt; ActiveRecord::Base
    liquid_methods :created_at, :foo, :bar, :baz
  end
  </code></pre>
  
  <p>How can I get a list of available methods for a model (in a hash or array, I suppose)? I'd like to output the list of available methods to users who use them in things like forum posts or email templates.</p>