protected boolean isRequired(MemberScope<?, ?> member) {
        Boolean nullableCheckResult = this.isNullable(member);
        return Boolean.FALSE.equals(nullableCheckResult);
    }
Determine whether a given field or method is deemed to be required in its parent type.

@param member the field or method to check
@return whether member is deemed to be required or not
jsonschema-module-jakarta-validation/src/main/java/com/github/victools/jsonschema/module/jakarta/validation/JakartaValidationModule.java