At a minimum, a CertPathBuilderResult contains the
CertPath built by the CertPathBuilder instance.
Implementations of this interface may add methods to return implementation
or algorithm specific information, such as debugging information or
certification path validation results.
Unless otherwise specified, the methods defined in this interface are not
thread-safe. Multiple threads that need to access a single
object concurrently should synchronize amongst themselves and
provide the necessary locking. Multiple threads each manipulating
separate objects need not synchronize.