title: How to give an abbreviation to a namespace?
body: <p>I have a namespace hierarchy and want to give an abbreviations for some long namespace names. For example, I have</p>
  
  <pre><code>Math::Geometry::OneDimension::
  </code></pre>
  
  <p>and I want to use <code>Ge</code> for <code>Geometry</code> and <code>D1</code> for <code>OneDimension</code> thus the following works</p>
  
  <pre><code>Math::Ge::OneDimension::
  Math::Geoemtry::D1::
  Math::Ge::D1::
  </code></pre>
  
  <p>Is it possible to use namespace alias to do it?</p>