@CanIgnoreReturnValue
    public Builder setNameCanonicalNormalization(
        PathNormalization first, PathNormalization... more) {
      this.nameCanonicalNormalization = checkNormalizations(Lists.asList(first, more));
      return this;
    }
Returns the normalizations that will be applied to the canonical form of filenames in the
file system. The canonical form is used to determine the equality of two filenames when
performing a file lookup.
jimfs/src/main/java/com/google/common/jimfs/Configuration.java