title: The type java.lang.CharSequence cannot be resolved. It is indirectly referenced from required .class files
body: <p>While trying to compile some project from GitHub, I met the following error</p>
  
  <pre><code>The type java.lang.CharSequence cannot be resolved. It is indirectly referenced from required .class files
  </code></pre>
  
  <p>If I am not mistaking, this is the class from basic JDK. How can it be unreacheable?</p>