Runs a series of checks on each component of a QWAmetadata object and
warns about any issues found. For $images, delegates to check_QWAimages().
For all other components, checks compliance with the corresponding JSON schema
and warns about missing optional columns. Absent components are skipped.
Arguments
- x
A QWAmetadata object.
Value
TRUE, invisibly. Warnings are issued for any problems found;
an error is thrown if a component fails structural validation.