NumberPropertyDefinition numberPropertyDefinition = (NumberPropertyDefinition) propertyDefinition;
String propertyName = getPropertyName(propertyDefinition, conversion);
// Add to content model
M2Property property = new M2Property();
property.setMandatory(new M2Mandatory(numberPropertyDefinition.isMandatory()));
property.setName(propertyName);
property.setPropertyType(AlfrescoConversionConstants.PROPERTY_TYPE_DOUBLE);
M2Model model = AlfrescoConversionUtil.getContentModel(conversion);
M2Aspect aspect = model.getAspect(propertyName);