SolrQuery::getFacetMissing
  Returns the current state of the facet.missing parameter
  
 
  Description
  
   public bool SolrQuery::getFacetMissing
    ([ string $field_override
  ] )
  
  
 
  Parameters
  
   
    
     - 
field_override
- 
      
       The name of the field
       
 
 
  Return Values
  
Returns a boolean on success and NULL if not set