Method axisStep

basex-core/src/main/java/org/basex/query/expr/path/Path.java:247–249

Tries to cast the specified step into an axis step. @param index index @return axis step, or null)

(final int index)

   * @return axis step, or {@code null})
   */
  private Step axisStep(final int index) {
    return steps[index] instanceof final Step step ? step : null;
  }

  /**
   * Checks if this path exclusively contains self, child and attribute steps.