public com.google.protobuf.ProtocolStringList getCompaniesList() {
    return companies_;
  }
<pre>
This filter specifies the company entities to search against.

If a value isn't specified, jobs are searched for against all
companies.

If multiple values are specified, jobs are searched against the
companies specified.

The format is
"projects/{project_id}/tenants/{tenant_id}/companies/{company_id}". For
example, "projects/foo/tenants/bar/companies/baz".

At most 20 company filters are allowed.
</pre>

<code>repeated string companies = 2;</code>

@return A list containing the companies.
java-talent/proto-google-cloud-talent-v4/src/main/java/com/google/cloud/talent/v4/JobQuery.java