def add_information_source_items(reference_item, source_id_item, schema_version_item, incident):
insrc = InformationSource()
if reference_item:
for item in reference_item.split(';'):
insrc.add_reference(item.strip())
if source_id_item or schema_version_item:
insrc.tools = ToolInformationList()
if source_id_item:
insrc.identity = Identity()
insrc.identity.name = source_id_item
tool = ToolInformation()
tool.name = "veris2stix"
tool.vendor = "MITRE"
tool.version = __version__
insrc.tools.append(tool)
if schema_version_item:
tool = ToolInformation()
tool.name = "VERIS schema"
tool.vendor = "Verizon"
tool.version = schema_version_item
insrc.tools.append(tool)
incident.information_source = insrc
