diff --git a/src/com/gpl/rpg/atcontentstudio/utils/lambda/CallWithReturn.java b/src/com/gpl/rpg/atcontentstudio/utils/lambda/CallWithReturn.java
new file mode 100644
index 0000000..fc2cbdb
--- /dev/null
+++ b/src/com/gpl/rpg/atcontentstudio/utils/lambda/CallWithReturn.java
@@ -0,0 +1,5 @@
+package com.gpl.rpg.atcontentstudio.utils.lambda;
+
+public interface CallWithReturn<T> {
+    T call();
+}
diff --git a/src/com/gpl/rpg/atcontentstudio/utils/lambda/CallWithSingleArg.java b/src/com/gpl/rpg/atcontentstudio/utils/lambda/CallWithSingleArg.java
new file mode 100644
index 0000000..723378f
--- /dev/null
+++ b/src/com/gpl/rpg/atcontentstudio/utils/lambda/CallWithSingleArg.java
@@ -0,0 +1,7 @@
+package com.gpl.rpg.atcontentstudio.utils.lambda;
+
+public interface CallWithSingleArg<T> {
+    void call(T arg);
+}
+
+
diff --git a/src/com/gpl/rpg/atcontentstudio/utils/lambda/CallWithThreeArgs.java b/src/com/gpl/rpg/atcontentstudio/utils/lambda/CallWithThreeArgs.java
new file mode 100644
index 0000000..f5e523c
--- /dev/null
+++ b/src/com/gpl/rpg/atcontentstudio/utils/lambda/CallWithThreeArgs.java
@@ -0,0 +1,5 @@
+package com.gpl.rpg.atcontentstudio.utils.lambda;
+
+public interface CallWithThreeArgs<T1, T2, T3> {
+    void call(T1 arg1, T2 arg2, T3 arg3);
+}
diff --git a/src/com/gpl/rpg/atcontentstudio/utils/lambda/CallWithTwoArgs.java b/src/com/gpl/rpg/atcontentstudio/utils/lambda/CallWithTwoArgs.java
new file mode 100644
index 0000000..4e77428
--- /dev/null
+++ b/src/com/gpl/rpg/atcontentstudio/utils/lambda/CallWithTwoArgs.java
@@ -0,0 +1,6 @@
+package com.gpl.rpg.atcontentstudio.utils.lambda;
+
+public interface CallWithTwoArgs<T1, T2> {
+    void call(T1 arg1, T2 arg2);
+}
+