/usr/share/pgmodeler/schemas/sql/eventtrigger.sch is in pgmodeler-common 0.8.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | # SQL definition for event triggers
# PostgreSQL Version: 9.x
# CAUTION: Do not modify this file unless you know what you are doing.
#          Code generation can be broken if incorrect changes are made.
%if ({pgsql-ver} >= "9.3") %then
  [-- object: ] {name} [ | type: ] {sql-object} [ --] $br
  [-- ] {drop}
 %if {prepended-sql} %then
   {prepended-sql}
   $br [-- ddl-end --] $br $br
 %end
  [CREATE EVENT TRIGGER ] {name}
  $br $tb [ON ] {event}
  %if {filter} %then
    $br $tb [WHEN ] {filter}
  %end
  $br $tb [EXECUTE PROCEDURE ] {function}; $br
  # This is a special token that pgModeler recognizes as end of DDL command
  # when exporting models directly to DBMS. DO NOT REMOVE THIS TOKEN!
  [-- ddl-end --] $br
  %if {owner} %then {owner} %end
  %if {comment} %then {comment} %end
  %if {appended-sql} %then
   {appended-sql}
   $br [-- ddl-end --] $br
  %end
 $br
%end
 |