Removed Boolean instantiation. Expanded star import.

Signed-off-by: John May <john.wilkinsonmay@gmail.com>
Replaced Boolean instantiation by predefined Boolean constant (PMD report).

Signed-off-by: John May <john.wilkinsonmay@gmail.com>
Removed unused formal parameters from private factory methods.

Signed-off-by: John May <john.wilkinsonmay@gmail.com>
Removed unused formal parameters from private factory methods.

Signed-off-by: John May <john.wilkinsonmay@gmail.com>
Removed unused import.

Signed-off-by: John May <john.wilkinsonmay@gmail.com>
Removed unused local variables (PMD report).

Signed-off-by: John May <john.wilkinsonmay@gmail.com>