cannot find type definition: multipart.FileHeader

[lzw5399]

Describe the bug
When I include the *multipart.FileHeader typed field in the custom struct and annotate the swag as the following screenshots, swag init will return the error msg

To Reproduce
Steps to reproduce the behavior:

1. run go get github.com/swaggo/swag/cmd/swag@80b6894b047bd06e970efa3e6dee1c3818811f4d in order to support the object for formdata ref: Support objects for formData #300
2. define custom struct as below screenshot
3. define the swag annotations as below screenshot
4. run swag init
5. saw the error

Expected behavior
swag init should executed successfully

Screenshots

Your swag version
v1.6.8-0.20200921161410-33e4ac3219fa

Your go version
1.15.2

Desktop (please complete the following information):

• OS: WIN 10

[lzw5399]

Although it may be a bit late, but I will share my workaround(may not the best practice)

• add swaggerignore tag for *multipart.FileHeader
• add swag comment to request struct and *multipart.FileHeader separately

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[jeefs]

thx,is't worked