Bio::EnsEMBL::Variation::DBSQL::MetaContainer - 
  Encapsulates all access to variation database meta information

  my $meta_container = $db_adaptor->get_MetaContainer();

  my $default_population = $meta_container->get_default_LDPopulation();

  An object that encapsulates specific access to variation db meta data

  my $self = shift;

  my $arrRef = $self->list_value_by_key( 'schema_version' );

  if( @$arrRef ) {
    my ($ver) = ($arrRef->[0] =~ /^\s*(\d+)\s*$/);
    if(!defined($ver)){ # old style format
      return 0;
    }
    return $ver;
  } else {
    warn("Please insert meta_key 'schema_version' " .
         "in meta table at core db.\n");
  }
  return 0;
}

1;

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