Ubuntu apt-get source linux-image-$(uname -r) does not gives me kernel source

I am trying to download linux kernel source code for ubuntu distribution. I did this directly in my home folder.

kerndev@kerndev-VirtualBox:~$ uname -r
5.0.0-37-generic
kerndev@kerndev-VirtualBox:~$ apt-get source linux-image-$(uname -r)  
Reading package lists... 
Done Picking 'linux-signed-hwe' as source package instead of 'linux-image-5.0.0-37-generic'  
Skipping already downloaded file 'linux-signed-hwe_5.0.0-37.40~18.04.1.dsc'  
Skipping already downloaded file 'linux-signed-hwe_5.0.0-37.40~18.04.1.tar.xz'  
Need to get 0 B of source archives. Skipping unpack of already unpacked source in linux-signed-hwe-5.0.0

After this step I just see following (excerpt).

kerndev@kerndev-VirtualBox:~$ ls -ltr
total 52
drwxr-xr-x 3 kerndev kerndev  4096 Apr  5  2019 linux-signed-hwe-5.0.0
-rw-r--r-- 1 kerndev kerndev 11356 Nov 15 02:13 linux-signed-hwe_5.0.0-37.40~18.04.1.tar.xz
-rw-r--r-- 1 kerndev kerndev  1862 Nov 15 02:13 linux-signed-hwe_5.0.0-37.40~18.04.1.dsc

Here again I do not see kernel source though (even in debian directory)

kerndev@kerndev-VirtualBox:~/linux-signed-hwe-5.0.0$ ls -ltr
total 24
-rwxr-xr-x 1 kerndev kerndev 2683 Apr  5  2019 update-version
-rwxr-xr-x 1 kerndev kerndev  216 Apr  5  2019 generate-depends
-rwxr-xr-x 1 kerndev kerndev  450 Apr  5  2019 download-unsigned
-rwxr-xr-x 1 kerndev kerndev 6491 Apr  5  2019 download-signed
drwxr-xr-x 5 kerndev kerndev 4096 Nov 14 15:59 debian

I remember I downloaded headers earlier and struggled to update source.list file. What I may be missing?