				{{#vendorExtensions.x-swift-enumerate-multipart}}
				{{^mapFileBinaryToData}}try {{/mapFileBinaryToData}}{{paramName}}{{^required}}?{{/required}}.enumerated().forEach { index, {{paramName}} in
					{{#mapFileBinaryToData}}
					let filename = "\({{paramName}})\(index)"
					{{/mapFileBinaryToData}}
					{{^mapFileBinaryToData}}
					let filename = {{paramName}}.lastPathComponent
					{{/mapFileBinaryToData}}
					let {{paramName}}Header = "--\(multipartBoundary)\r\n"
					    .appending("Content-Disposition:form-data; name=\"{{paramName}}\"; filename=\"\(filename)\"\r\n")
					{{#contentType}}
					    .appending("Content-Type: {{{contentType}}}\r\n")
					{{/contentType}}
					    .appending("\r\n")
					multipartData.append({{paramName}}Header.data(using: .utf8) ?? Data())
					multipartData.append({{#items}}{{> toData}}{{/items}}) 
					multipartData.append("\r\n".data(using: .utf8) ?? Data())
				}
				{{/vendorExtensions.x-swift-enumerate-multipart}}
				{{^vendorExtensions.x-swift-enumerate-multipart}}
				{{#required}}
				let {{paramName}}Header = "--\(multipartBoundary)\r\n"
				{{#isFile}}
				    .appending("Content-Disposition:form-data; name=\"{{paramName}}\"; filename=\"{{paramName}}\"\r\n")
				{{/isFile}}
				{{^isFile}}
				    .appending("Content-Disposition:form-data; name=\"{{paramName}}\"\r\n")
				{{/isFile}}
				{{#contentType}}
				    .appending("Content-Type: {{{contentType}}}\r\n")
				{{/contentType}}
				    .appending("\r\n")
				multipartData.append({{paramName}}Header.data(using: .utf8) ?? Data())
				multipartData.append({{> toData}})
				{{^-last}}
				multipartData.append("\r\n".data(using: .utf8) ?? Data())
				{{/-last}}
				{{/required}}
				{{^required}}
				if let {{paramName}} = {{paramName}} {
					let {{paramName}}Header = "--\(multipartBoundary)\r\n"
					{{#isFile}}
					    .appending("Content-Disposition:form-data; name=\"{{paramName}}\"; filename=\"{{paramName}}\"\r\n")
					{{/isFile}}
					{{^isFile}}
					    .appending("Content-Disposition:form-data; name=\"{{paramName}}\"\r\n")
					{{/isFile}}
					{{#contentType}}
					    .appending("Content-Type: {{{contentType}}}\r\n")
					{{/contentType}}
					    .appending("\r\n")
					multipartData.append({{paramName}}Header.data(using: .utf8) ?? Data())
					multipartData.append({{> toData}})
					{{^-last}}
					multipartData.append("\r\n".data(using: .utf8) ?? Data())
					{{/-last}}
				}
				{{/required}}
				{{/vendorExtensions.x-swift-enumerate-multipart}}