B2BCatalogRefractions

b2bOpticLensCatalog→lensRanges→lensRange

$B2BCatalogRefractions$

steps
type	B2BCatalogRefractionSteps
occurs	0..1
description	0.25 or 0.125 or …

refraction
type	B2BCatalogRefraction
occurs	1..∞
description	linked to B2BCatalogRefraction

<xs:complexType name="B2BCatalogRefractions">
  <xs:sequence>
    <xs:element minOccurs="0" name="steps" type="B2BCatalogRefractionSteps"/>
    <xs:element maxOccurs="unbounded" name="refraction" type="B2BCatalogRefraction"/>
  </xs:sequence>
</xs:complexType>