MagicDraw: Has an additional tool-specific notation and feature sometimes called "ball-and-socket dependency wiring" for use with provided and required Interfaces in Class Diagrams and some other definition-level diagrams.
Required/Provided Interface notation: Ball-and-Socket "dependency wiring" [tool specific] Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 01:02: UML 101 for model-based systems engineering with SysML Slide kind UML Class Diagram
A given BehavioredClassifier may implement more than one Interface and that an Interface may be implemented by a number of different BehavioredClassifiers. Source Unified Modeling Language 2.5.1
The set of Interfaces realized by a BehavioredClassifier are its provided Interfaces, which represent the services and obligations that instances of that BehavioredClassifier offer to their clients. Source Unified Modeling Language 2.5.1
BehavioredClassifier and provided and required Interfaces Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 01:02: UML 101 for model-based systems engineering with SysML Slide kind UML Class Diagram
MagicDraw/Cameo 19SP3: Validation of required and provided Interfaces proxied between a ProxyPort and a part with a compatible contract fails
UML provided/required Interfaces vs SysML DirectedFeatures on Ports Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 09:04: Ports and contracts Slide kind hybrid diagram SysML Block Definition Diagram (BDD) SysML Internal Block Diagram (IBD)
[HISTORICAL] UML-STYLE: Hybrid SUV example: Ports with required/provided Interfaces (Internal Definition Diagram) ARCHIVAL (2020): This content is now considered historical only! Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 09:04: Ports and contracts Slide kind SysML Internal Block Diagram (IBD)
In general, the SysML DirectedFeature approach is more powerful and the notation is cleaner than UML provided/required Interfaces. Prefer SysML DirectedFeatures unless you have a really good reason to use Interfaces!
[HISTORICAL] UML-STYLE: Hybrid SUV example: Ports with required/provided Interfaces (Block Definition Diagram) ARCHIVAL (2020): This content is now considered historical only! Gallery Tutorial TRAIL: Webel's ultimate guide to Systems Modeling Language (v1) with MagicDraw/Cameo Section 09:04: Ports and contracts Slide kind SysML Block Definition Diagram (BDD)
SysML directed features displayed on Port symbols are often far clearer than UML-style provided/required Interface "ball (lollipop) and socket" notation
Figure D.19 - Internal Structure of the Power Subsystem (Internal Block Diagram) Gallery Tutorial TRAIL: The SysML-1.6 Hybrid SUV sample and specification diagrams in MagicDraw/Cameo (with annotations) [UNDERGOING UPDATE to SysML1.7] Section Section: SysML-1.6: HSUV sample Slide kind SysML Internal Block Diagram (IBD)
