1 files changed, 18 insertions, 0 deletions
diff --git a/lib/Moose/Exception/CallingReadOnlyMethodOnAnImmutableInstance.pm b/lib/Moose/Exception/CallingReadOnlyMethodOnAnImmutableInstance.pm
new file mode 100644
index 0000000..e880935
--- /dev/null
+++ b/lib/Moose/Exception/CallingReadOnlyMethodOnAnImmutableInstance.pm
@@ -0,0 +1,18 @@
+package Moose::Exception::CallingReadOnlyMethodOnAnImmutableInstance;
+our $VERSION = '2.1405';
+
+use Moose;
+extends 'Moose::Exception';
+
+has 'method_name' => (
+    is       => 'ro',
+    isa      => 'Str',
+    required => 1
+);
+
+sub _build_message {
+    my $self = shift;
+    "The '".$self->method_name."' method is read-only when called on an immutable instance";
+}
+
+1;