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The following is based on SysML2.0 spec p.27 and p.28. Given:
package P1 {
item A;
item B;
alias <C> CCC for B {
doc /* Documentation of the alias. */
}
private alias D for B;
}
import C below fails:
package P2 {
private import P1::A;
private import P1::C; // Imported with name "C".
package Q {
import C; // "C" is re-imported from P2 into Q.
}
}
The above works though in Cameo if you use private import C;.
According to the spec private 'is the default in the abstract syntax' and examples suggest that using a visibility declaration should be optional.