Fix failures for older GMMs that support PGV but are clipped

Older CEUS GMMs are 'clipped' at short periods, but if they support PGV, then a NPE is thrown in GmmUtils.ceusMeanClip(). Errors are propagating up to services and apps.

• Create test to instantiate and call calc on all supported IMTs of all GMMs (this is also going to catch #231 (closed) errors)
• Update Imt.period() to return an OptionalDouble instead of null.

changed milestone to %GMM Sprint

added Bug GMM labels

assigned to @pmpowers

In setting up instantiation test, the following GMM/IMTs fail:

AB_06_PRIME : PGV : class java.lang.NullPointerException
AB_06_140BAR : PGV : class java.lang.NullPointerException
AB_06_200BAR : PGV : class java.lang.NullPointerException
ATKINSON_08_PRIME : PGV : class java.lang.NullPointerException
AB_06_140BAR_J : PGV : class java.lang.NullPointerException
AB_06_200BAR_J : PGV : class java.lang.NullPointerException
AB_06_140BAR_AB : PGV : class java.lang.NullPointerException
AB_06_200BAR_AB : PGV : class java.lang.NullPointerException
ATKINSON_15 : PGV : class java.lang.NullPointerException
NGA_EAST_SEED_GRAIZER : PGV : class java.lang.NullPointerException
NGA_EAST_SEED_PEER_EX : PGV : class java.lang.NullPointerException
COMBINED_ACTIVE_CRUST_2014_41 : PGV : class com.google.common.util.concurrent.UncheckedExecutionException

changed the description

Switching to OptionalDouble as a return for Imt.period() is pretty invasive and so we'll prefer recommending using the isSA() check as is currently done in most places. Consider adding period as an internal field to Imt and have Imt.period() throw a UOE instead of returning null.

marked the checklist item Create test to instantiate and call calc on all supported IMTs of all GMMs (this is also going to catch #231 (closed) errors) as completed

changed title from Fix failures for older GMMs that support PGV put are clipped to Fix failures for older GMMs that support PGV but are clipped

mentioned in issue #209 (closed)

mentioned in merge request !400 (merged)

mentioned in commit a91a7297

closed with merge request !400 (merged)