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      <pre class="code"><span class="info file"># File 'lib/coinbase/client/models/fetch_historical_staking_balances200_response.rb', line 51</span>

<span class='kw'>def</span> <span class='kw'>self</span><span class='period'>.</span><span class='id identifier rubyid_openapi_nullable'>openapi_nullable</span>
  <span class='const'>Set</span><span class='period'>.</span><span class='id identifier rubyid_new'>