public boolean isKeyColumn(final ColumnName columnName) {
    return findColumnMatching(withNamespace(Namespace.KEY).and(withName(columnName)))
        .isPresent();
  }
@Test
  public void shouldNotMatchRandomColumnNameAsBeingMetaOrKeyColumns() {
    assertThat(SystemColumns.isPseudoColumn(ColumnName.of("well_this_ain't_in_the_schema")), is(false));
    assertThat(SOME_SCHEMA.isKeyColumn(ColumnName.of("well_this_ain't_in_the_schema")), is(false));
  }