public ResolvedType getContainerItemType(ResolvedType containerType) {
        ResolvedType itemType = containerType.getArrayElementType();
        if (itemType == null && this.isContainerType(containerType)) {
            itemType = this.getTypeParameterFor(containerType, Iterable.class, 0);
        }
        return itemType;
    }
Identify the element/item type of the given {@link SchemaKeyword#TAG_TYPE_ARRAY}.

@param containerType type to extract type of element/item from
@return type of elements/items
@see #isContainerType(ResolvedType)
jsonschema-generator/src/main/java/com/github/victools/jsonschema/generator/TypeContext.java