[BLUEJ-549] Syntax for lambda expressions is not well supported - BlueJ/Greenfoot bug tracker

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When compiling the following sentence:

#!div style="font-size: 90%"
  {{{#!python
  BiFunction addition = ( x, y ) -> x + y;
  }}}

the following error is raised:

bad operand types for binary operator '+'
  first type: java.lang.Object;  second type: java.lang.Object

Used version: 3.1.4 (Java version 1.8.0_25)