code: public List<JAXBElement<? extends AbstractSolidType>> get_Solid() {
          if (_Solid == null) {
              _Solid = new ArrayList<JAXBElement<? extends AbstractSolidType>>();
          }
          return this._Solid;
      }
docs: Gets the value of the solid property.
  
  <p>
  This accessor method returns a reference to the live list,
  not a snapshot. Therefore any modification you make to the
  returned list will be present inside the JAXB object.
  This is why there is not a <CODE>set</CODE> method for the solid property.
  
  <p>
  For example, to add a new item, do as follows:
  <pre>
  get_Solid().add(newItem);
  </pre>
  
  
  <p>
  Objects of the following type(s) are allowed in the list
  {@link JAXBElement }{@code <}{@link CompositeSolidType }{@code >}
  {@link JAXBElement }{@code <}{@link SolidType }{@code >}
  {@link JAXBElement }{@code <}{@link AbstractSolidType }{@code >}