match command not recognized under ip policy list IOS

[jaswant6068]

Describe the bug and expected behavior
command "match ip address prefix-list ONE" being configured under ip policy-list is not being recognized which cause batfish to declare prefix list named "ONE" as unused incorrectly while questioning for unusedStructures.

Runnable example

from pybatfish.client.session import Session
TXT = """
hostname device03

boot-start-marker
boot system flash bootflash:asr1002x-universealk9.17.06.04.SPA.bin
boot-end-marker

int loopback0
 ip address 1.1.1.1 255.255.255.255

ip prefix-list ONE permit 2.2.2.0/24

ip policy-list ONE permit
 match ip address prefix-list ONE

route-map TEST permit 10
 match policy-list ONE

router bgp 11111
neighbor TEST2 peer-group
neighbor TEST2 remote-as 22222
neighbor TEST2 route-map TEST in
neighbor TEST2 route-map TEST out
neighbor 3.3.3.3 peer-group TEST2

"""
bf = Session()
bf.set_network("github-bug-report")
bf.init_snapshot_from_text(TXT)

print(bf.q.fileParseStatus().answer())
        File_Name                  Status File_Format         Nodes

0  configs/config  PARTIALLY_UNRECOGNIZED   CISCO_IOS  ['device03']
print(bf.q.initIssues().answer())
  Nodes           Source_Lines           Type                      Details  \

0  None  [configs/config:[14]]  Parse warning  This syntax is unrecognized  

 

                          Line_Text  \

0  match ip address prefix-list ONE  

 

                                   Parser_Context 

0  [null_block s_null stanza cisco_configuration]

print(bf.q.unusedStructures().answer())

 Structure_Type Structure_Name         Source_Lines

0 ipv4 prefix-list ONE configs/config:[11]

[Dan Halperin]

ip policy-list is not supported in the Cisco IOS model right now. We would welcome a contribution for this support!