A builder for creating a Config instance programmatically.
While it's most common in Laika that Config instances are obtained
by parsing HOCON, instances can also be created entirely programmatically,
or by a combination of HOCON and programmatic values if an existing
fallback is used with builder.
Creates a builder with the specified fallback which will be used
for resolving keys which are not present in the configuration created
by this builder.
Creates a builder with the specified fallback which will be used
for resolving keys which are not present in the configuration created
by this builder.
If an entire object is requested in the resulting Config instance,
the keys will be merged from this builder with those present in the fallback.
Simple values on the other hand will always override values with the same
key in the fallback.